TB 1-1615-351-23
Inspection of Main Rotor Agcoat. Wear through to blade surface not allowed.
l.
m.
Inspection of Tail Rotor Polyurethane Tape.
(1) Inspect 4-inch tape for wear. No more than 0.5 inch wide spanwise or chordwise hole allowed
on trailing edge. No holes allowed on any other surface of tape.
(2) Inspect upper and lower trailing edge of tape for disbonding. No more than 0.25 inch
chordwise width for any spanwise length of tape or 0.5 inch chordwise width for 6 inches spanwise
length along a single piece of tape is allowed.
(3) Inspect for inboard and outboard ends of tape segments for disbonding. No more than 0.5
inch spanwise or chordwise is allowed.
(4) Inspect for internal disbonding of tape segments. No more than a single disbonding larger
than 3.0 inches spanwise and/or 2.0 inches chordwise allowed. In addition, no more than a total of 6
square inches is allowed for multiple disbonding on a single tape segment. There is no limit to the
number of disbonds per tape segment providing material is not torn.
CAUTION
If damage is discovered and found to be within the above limitations,
do not trim off these damaged areas. Trimming off these damaged area
creates an increasingly lighter blade and may cause an out of balance
condition.
n. Inspection of Tail Rotor Agcoat. Wear through to blade surface not allowed.
Change 3
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